1/*
2 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *    Rob Clark <robclark@freedesktop.org>
25 */
26
27#include "pipe/p_state.h"
28#include "util/u_memory.h"
29#include "util/u_string.h"
30
31#include "fd3_context.h"
32#include "fd3_format.h"
33#include "fd3_zsa.h"
34
35void *
36fd3_zsa_state_create(struct pipe_context *pctx,
37                     const struct pipe_depth_stencil_alpha_state *cso)
38{
39   struct fd3_zsa_stateobj *so;
40
41   so = CALLOC_STRUCT(fd3_zsa_stateobj);
42   if (!so)
43      return NULL;
44
45   so->base = *cso;
46
47   so->rb_depth_control |=
48      A3XX_RB_DEPTH_CONTROL_ZFUNC(cso->depth_func); /* maps 1:1 */
49
50   if (cso->depth_enabled)
51      so->rb_depth_control |=
52         A3XX_RB_DEPTH_CONTROL_Z_TEST_ENABLE | A3XX_RB_DEPTH_CONTROL_Z_READ_ENABLE;
53
54   if (cso->depth_writemask)
55      so->rb_depth_control |= A3XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE;
56
57   if (cso->stencil[0].enabled) {
58      const struct pipe_stencil_state *s = &cso->stencil[0];
59
60      so->rb_stencil_control |=
61         A3XX_RB_STENCIL_CONTROL_STENCIL_READ |
62         A3XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
63         A3XX_RB_STENCIL_CONTROL_FUNC(s->func) | /* maps 1:1 */
64         A3XX_RB_STENCIL_CONTROL_FAIL(fd_stencil_op(s->fail_op)) |
65         A3XX_RB_STENCIL_CONTROL_ZPASS(fd_stencil_op(s->zpass_op)) |
66         A3XX_RB_STENCIL_CONTROL_ZFAIL(fd_stencil_op(s->zfail_op));
67      so->rb_stencilrefmask |=
68         0xff000000 | /* ??? */
69         A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
70         A3XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
71
72      if (cso->stencil[1].enabled) {
73         const struct pipe_stencil_state *bs = &cso->stencil[1];
74
75         so->rb_stencil_control |=
76            A3XX_RB_STENCIL_CONTROL_STENCIL_ENABLE_BF |
77            A3XX_RB_STENCIL_CONTROL_FUNC_BF(bs->func) | /* maps 1:1 */
78            A3XX_RB_STENCIL_CONTROL_FAIL_BF(fd_stencil_op(bs->fail_op)) |
79            A3XX_RB_STENCIL_CONTROL_ZPASS_BF(fd_stencil_op(bs->zpass_op)) |
80            A3XX_RB_STENCIL_CONTROL_ZFAIL_BF(fd_stencil_op(bs->zfail_op));
81         so->rb_stencilrefmask_bf |=
82            0xff000000 | /* ??? */
83            A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(bs->writemask) |
84            A3XX_RB_STENCILREFMASK_STENCILMASK(bs->valuemask);
85      }
86   }
87
88   if (cso->alpha_enabled) {
89      so->rb_render_control =
90         A3XX_RB_RENDER_CONTROL_ALPHA_TEST |
91         A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC(cso->alpha_func);
92      so->rb_alpha_ref = A3XX_RB_ALPHA_REF_UINT(cso->alpha_ref_value * 255.0f) |
93                         A3XX_RB_ALPHA_REF_FLOAT(cso->alpha_ref_value);
94      so->rb_depth_control |= A3XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
95   }
96
97   return so;
98}
99